Stormwater Study & SWPPP Plan
Budget: $10 – $30 USD
I have a new development moving into design and need a full stormwater management study that will flow straight into our SWPPP submittal package. The scope is strictly for a green-field site, so nothing has been built yet and there is no legacy infrastructure to work around.
The study must address three items I have already defined as critical:
• Drainage design—size and layout of conveyance systems, inlet spacing, pipe sizing, and overland relief routes.
• Runoff reduction techniques—opportunities for detention, infiltration, LID/BMP practices, and any other feasible measures to keep post-development peaks at or below existing conditions.
• Erosion and sediment control—both during construction and for long-term site stability, with details that will drop straight into the SWPPP.
I expect hydraulic and hydrologic calculations (HEC-RAS, HEC-HMS, HydroCAD, or comparable), exhibits that will sit behind the civil sheets (PDF + CAD), and a narrative that ties it all together so the permitting authority can follow the logic without extra clarification. If your seal is accepted in my jurisdiction that is a plus, but I mainly need calculations and drawings that meet current stormwater and NPDES standards and can be stamped locally if required.
Deliver everything in editable formats plus a clean, ready-to-submit PDF set. Let me know your proposed approach, timeline, and any assumptions you would need from me (survey, soils, rainfall data, etc.) so we can get this moving.
The study must address three items I have already defined as critical:
• Drainage design—size and layout of conveyance systems, inlet spacing, pipe sizing, and overland relief routes.
• Runoff reduction techniques—opportunities for detention, infiltration, LID/BMP practices, and any other feasible measures to keep post-development peaks at or below existing conditions.
• Erosion and sediment control—both during construction and for long-term site stability, with details that will drop straight into the SWPPP.
I expect hydraulic and hydrologic calculations (HEC-RAS, HEC-HMS, HydroCAD, or comparable), exhibits that will sit behind the civil sheets (PDF + CAD), and a narrative that ties it all together so the permitting authority can follow the logic without extra clarification. If your seal is accepted in my jurisdiction that is a plus, but I mainly need calculations and drawings that meet current stormwater and NPDES standards and can be stamped locally if required.
Deliver everything in editable formats plus a clean, ready-to-submit PDF set. Let me know your proposed approach, timeline, and any assumptions you would need from me (survey, soils, rainfall data, etc.) so we can get this moving.